1 // SPDX-License-Identifier: GPL-2.0
4 * Copyright (c) 2013, Intel Corporation
5 * Authors: Huajun Li <huajun.li@intel.com>
6 * Haicheng Li <haicheng.li@intel.com>
10 #include <linux/f2fs_fs.h>
11 #include <linux/fiemap.h>
15 #include <trace/events/f2fs.h>
17 bool f2fs_may_inline_data(struct inode *inode)
19 if (f2fs_is_atomic_file(inode))
22 if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))
25 if (i_size_read(inode) > MAX_INLINE_DATA(inode))
28 if (f2fs_post_read_required(inode))
34 bool f2fs_may_inline_dentry(struct inode *inode)
36 if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY))
39 if (!S_ISDIR(inode->i_mode))
45 void f2fs_do_read_inline_data(struct page *page, struct page *ipage)
47 struct inode *inode = page->mapping->host;
48 void *src_addr, *dst_addr;
50 if (PageUptodate(page))
53 f2fs_bug_on(F2FS_P_SB(page), page->index);
55 zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE);
57 /* Copy the whole inline data block */
58 src_addr = inline_data_addr(inode, ipage);
59 dst_addr = kmap_atomic(page);
60 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
61 flush_dcache_page(page);
62 kunmap_atomic(dst_addr);
63 if (!PageUptodate(page))
64 SetPageUptodate(page);
67 void f2fs_truncate_inline_inode(struct inode *inode,
68 struct page *ipage, u64 from)
72 if (from >= MAX_INLINE_DATA(inode))
75 addr = inline_data_addr(inode, ipage);
77 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
78 memset(addr + from, 0, MAX_INLINE_DATA(inode) - from);
79 set_page_dirty(ipage);
82 clear_inode_flag(inode, FI_DATA_EXIST);
85 int f2fs_read_inline_data(struct inode *inode, struct page *page)
89 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
92 return PTR_ERR(ipage);
95 if (!f2fs_has_inline_data(inode)) {
96 f2fs_put_page(ipage, 1);
101 zero_user_segment(page, 0, PAGE_SIZE);
103 f2fs_do_read_inline_data(page, ipage);
105 if (!PageUptodate(page))
106 SetPageUptodate(page);
107 f2fs_put_page(ipage, 1);
112 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
114 struct f2fs_io_info fio = {
115 .sbi = F2FS_I_SB(dn->inode),
116 .ino = dn->inode->i_ino,
119 .op_flags = REQ_SYNC | REQ_PRIO,
121 .encrypted_page = NULL,
122 .io_type = FS_DATA_IO,
127 if (!f2fs_exist_data(dn->inode))
130 err = f2fs_reserve_block(dn, 0);
134 err = f2fs_get_node_info(fio.sbi, dn->nid, &ni);
136 f2fs_truncate_data_blocks_range(dn, 1);
141 fio.version = ni.version;
143 if (unlikely(dn->data_blkaddr != NEW_ADDR)) {
145 set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
146 f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
147 __func__, dn->inode->i_ino, dn->data_blkaddr);
148 return -EFSCORRUPTED;
151 f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
153 f2fs_do_read_inline_data(page, dn->inode_page);
154 set_page_dirty(page);
156 /* clear dirty state */
157 dirty = clear_page_dirty_for_io(page);
159 /* write data page to try to make data consistent */
160 set_page_writeback(page);
161 ClearPageError(page);
162 fio.old_blkaddr = dn->data_blkaddr;
163 set_inode_flag(dn->inode, FI_HOT_DATA);
164 f2fs_outplace_write_data(dn, &fio);
165 f2fs_wait_on_page_writeback(page, DATA, true, true);
167 inode_dec_dirty_pages(dn->inode);
168 f2fs_remove_dirty_inode(dn->inode);
171 /* this converted inline_data should be recovered. */
172 set_inode_flag(dn->inode, FI_APPEND_WRITE);
174 /* clear inline data and flag after data writeback */
175 f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0);
176 clear_inline_node(dn->inode_page);
178 stat_dec_inline_inode(dn->inode);
179 clear_inode_flag(dn->inode, FI_INLINE_DATA);
184 int f2fs_convert_inline_inode(struct inode *inode)
186 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
187 struct dnode_of_data dn;
188 struct page *ipage, *page;
191 if (!f2fs_has_inline_data(inode) ||
192 f2fs_hw_is_readonly(sbi) || f2fs_readonly(sbi->sb))
195 page = f2fs_grab_cache_page(inode->i_mapping, 0, false);
201 ipage = f2fs_get_node_page(sbi, inode->i_ino);
203 err = PTR_ERR(ipage);
207 set_new_dnode(&dn, inode, ipage, ipage, 0);
209 if (f2fs_has_inline_data(inode))
210 err = f2fs_convert_inline_page(&dn, page);
216 f2fs_put_page(page, 1);
218 f2fs_balance_fs(sbi, dn.node_changed);
223 int f2fs_write_inline_data(struct inode *inode, struct page *page)
225 void *src_addr, *dst_addr;
226 struct dnode_of_data dn;
229 set_new_dnode(&dn, inode, NULL, NULL, 0);
230 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
234 if (!f2fs_has_inline_data(inode)) {
239 f2fs_bug_on(F2FS_I_SB(inode), page->index);
241 f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true);
242 src_addr = kmap_atomic(page);
243 dst_addr = inline_data_addr(inode, dn.inode_page);
244 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
245 kunmap_atomic(src_addr);
246 set_page_dirty(dn.inode_page);
248 f2fs_clear_page_cache_dirty_tag(page);
250 set_inode_flag(inode, FI_APPEND_WRITE);
251 set_inode_flag(inode, FI_DATA_EXIST);
253 clear_inline_node(dn.inode_page);
258 int f2fs_recover_inline_data(struct inode *inode, struct page *npage)
260 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
261 struct f2fs_inode *ri = NULL;
262 void *src_addr, *dst_addr;
266 * The inline_data recovery policy is as follows.
267 * [prev.] [next] of inline_data flag
268 * o o -> recover inline_data
269 * o x -> remove inline_data, and then recover data blocks
270 * x o -> remove inline_data, and then recover inline_data
271 * x x -> recover data blocks
274 ri = F2FS_INODE(npage);
276 if (f2fs_has_inline_data(inode) &&
277 ri && (ri->i_inline & F2FS_INLINE_DATA)) {
279 ipage = f2fs_get_node_page(sbi, inode->i_ino);
281 return PTR_ERR(ipage);
283 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
285 src_addr = inline_data_addr(inode, npage);
286 dst_addr = inline_data_addr(inode, ipage);
287 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
289 set_inode_flag(inode, FI_INLINE_DATA);
290 set_inode_flag(inode, FI_DATA_EXIST);
292 set_page_dirty(ipage);
293 f2fs_put_page(ipage, 1);
297 if (f2fs_has_inline_data(inode)) {
298 ipage = f2fs_get_node_page(sbi, inode->i_ino);
300 return PTR_ERR(ipage);
301 f2fs_truncate_inline_inode(inode, ipage, 0);
302 clear_inode_flag(inode, FI_INLINE_DATA);
303 f2fs_put_page(ipage, 1);
304 } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
307 ret = f2fs_truncate_blocks(inode, 0, false);
315 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
316 const struct f2fs_filename *fname,
317 struct page **res_page)
319 struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
320 struct f2fs_dir_entry *de;
321 struct f2fs_dentry_ptr d;
325 ipage = f2fs_get_node_page(sbi, dir->i_ino);
331 inline_dentry = inline_data_addr(dir, ipage);
333 make_dentry_ptr_inline(dir, &d, inline_dentry);
334 de = f2fs_find_target_dentry(&d, fname, NULL);
337 *res_page = ERR_CAST(de);
343 f2fs_put_page(ipage, 0);
348 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
351 struct f2fs_dentry_ptr d;
354 inline_dentry = inline_data_addr(inode, ipage);
356 make_dentry_ptr_inline(inode, &d, inline_dentry);
357 f2fs_do_make_empty_dir(inode, parent, &d);
359 set_page_dirty(ipage);
361 /* update i_size to MAX_INLINE_DATA */
362 if (i_size_read(inode) < MAX_INLINE_DATA(inode))
363 f2fs_i_size_write(inode, MAX_INLINE_DATA(inode));
368 * NOTE: ipage is grabbed by caller, but if any error occurs, we should
369 * release ipage in this function.
371 static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
375 struct dnode_of_data dn;
376 struct f2fs_dentry_block *dentry_blk;
377 struct f2fs_dentry_ptr src, dst;
380 page = f2fs_grab_cache_page(dir->i_mapping, 0, true);
382 f2fs_put_page(ipage, 1);
386 set_new_dnode(&dn, dir, ipage, NULL, 0);
387 err = f2fs_reserve_block(&dn, 0);
391 if (unlikely(dn.data_blkaddr != NEW_ADDR)) {
393 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
394 f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
395 __func__, dir->i_ino, dn.data_blkaddr);
400 f2fs_wait_on_page_writeback(page, DATA, true, true);
402 dentry_blk = page_address(page);
404 make_dentry_ptr_inline(dir, &src, inline_dentry);
405 make_dentry_ptr_block(dir, &dst, dentry_blk);
407 /* copy data from inline dentry block to new dentry block */
408 memcpy(dst.bitmap, src.bitmap, src.nr_bitmap);
409 memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap);
411 * we do not need to zero out remainder part of dentry and filename
412 * field, since we have used bitmap for marking the usage status of
413 * them, besides, we can also ignore copying/zeroing reserved space
414 * of dentry block, because them haven't been used so far.
416 memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max);
417 memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN);
419 if (!PageUptodate(page))
420 SetPageUptodate(page);
421 set_page_dirty(page);
423 /* clear inline dir and flag after data writeback */
424 f2fs_truncate_inline_inode(dir, ipage, 0);
426 stat_dec_inline_dir(dir);
427 clear_inode_flag(dir, FI_INLINE_DENTRY);
430 * should retrieve reserved space which was used to keep
431 * inline_dentry's structure for backward compatibility.
433 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
434 !f2fs_has_inline_xattr(dir))
435 F2FS_I(dir)->i_inline_xattr_size = 0;
437 f2fs_i_depth_write(dir, 1);
438 if (i_size_read(dir) < PAGE_SIZE)
439 f2fs_i_size_write(dir, PAGE_SIZE);
441 f2fs_put_page(page, 1);
445 static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry)
447 struct f2fs_dentry_ptr d;
448 unsigned long bit_pos = 0;
451 make_dentry_ptr_inline(dir, &d, inline_dentry);
453 while (bit_pos < d.max) {
454 struct f2fs_dir_entry *de;
455 struct f2fs_filename fname;
459 if (!test_bit_le(bit_pos, d.bitmap)) {
464 de = &d.dentry[bit_pos];
466 if (unlikely(!de->name_len)) {
472 * We only need the disk_name and hash to move the dentry.
473 * We don't need the original or casefolded filenames.
475 memset(&fname, 0, sizeof(fname));
476 fname.disk_name.name = d.filename[bit_pos];
477 fname.disk_name.len = le16_to_cpu(de->name_len);
478 fname.hash = de->hash_code;
480 ino = le32_to_cpu(de->ino);
481 fake_mode = f2fs_get_de_type(de) << S_SHIFT;
483 err = f2fs_add_regular_entry(dir, &fname, NULL, ino, fake_mode);
485 goto punch_dentry_pages;
487 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
491 truncate_inode_pages(&dir->i_data, 0);
492 f2fs_truncate_blocks(dir, 0, false);
493 f2fs_remove_dirty_inode(dir);
497 static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
503 backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir),
504 MAX_INLINE_DATA(dir), GFP_F2FS_ZERO);
505 if (!backup_dentry) {
506 f2fs_put_page(ipage, 1);
510 memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir));
511 f2fs_truncate_inline_inode(dir, ipage, 0);
515 err = f2fs_add_inline_entries(dir, backup_dentry);
521 stat_dec_inline_dir(dir);
522 clear_inode_flag(dir, FI_INLINE_DENTRY);
525 * should retrieve reserved space which was used to keep
526 * inline_dentry's structure for backward compatibility.
528 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
529 !f2fs_has_inline_xattr(dir))
530 F2FS_I(dir)->i_inline_xattr_size = 0;
532 kfree(backup_dentry);
536 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
537 memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
538 f2fs_i_depth_write(dir, 0);
539 f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
540 set_page_dirty(ipage);
541 f2fs_put_page(ipage, 1);
543 kfree(backup_dentry);
547 static int do_convert_inline_dir(struct inode *dir, struct page *ipage,
550 if (!F2FS_I(dir)->i_dir_level)
551 return f2fs_move_inline_dirents(dir, ipage, inline_dentry);
553 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry);
556 int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry)
558 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
560 struct f2fs_filename fname;
561 void *inline_dentry = NULL;
564 if (!f2fs_has_inline_dentry(dir))
569 err = f2fs_setup_filename(dir, &dentry->d_name, 0, &fname);
573 ipage = f2fs_get_node_page(sbi, dir->i_ino);
575 err = PTR_ERR(ipage);
579 if (f2fs_has_enough_room(dir, ipage, &fname)) {
580 f2fs_put_page(ipage, 1);
584 inline_dentry = inline_data_addr(dir, ipage);
586 err = do_convert_inline_dir(dir, ipage, inline_dentry);
588 f2fs_put_page(ipage, 1);
590 f2fs_free_filename(&fname);
596 int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname,
597 struct inode *inode, nid_t ino, umode_t mode)
599 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
601 unsigned int bit_pos;
602 void *inline_dentry = NULL;
603 struct f2fs_dentry_ptr d;
604 int slots = GET_DENTRY_SLOTS(fname->disk_name.len);
605 struct page *page = NULL;
608 ipage = f2fs_get_node_page(sbi, dir->i_ino);
610 return PTR_ERR(ipage);
612 inline_dentry = inline_data_addr(dir, ipage);
613 make_dentry_ptr_inline(dir, &d, inline_dentry);
615 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max);
616 if (bit_pos >= d.max) {
617 err = do_convert_inline_dir(dir, ipage, inline_dentry);
625 down_write(&F2FS_I(inode)->i_sem);
626 page = f2fs_init_inode_metadata(inode, dir, fname, ipage);
633 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
635 f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash,
638 set_page_dirty(ipage);
640 /* we don't need to mark_inode_dirty now */
642 f2fs_i_pino_write(inode, dir->i_ino);
644 /* synchronize inode page's data from inode cache */
645 if (is_inode_flag_set(inode, FI_NEW_INODE))
646 f2fs_update_inode(inode, page);
648 f2fs_put_page(page, 1);
651 f2fs_update_parent_metadata(dir, inode, 0);
654 up_write(&F2FS_I(inode)->i_sem);
656 f2fs_put_page(ipage, 1);
660 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
661 struct inode *dir, struct inode *inode)
663 struct f2fs_dentry_ptr d;
665 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
666 unsigned int bit_pos;
670 f2fs_wait_on_page_writeback(page, NODE, true, true);
672 inline_dentry = inline_data_addr(dir, page);
673 make_dentry_ptr_inline(dir, &d, inline_dentry);
675 bit_pos = dentry - d.dentry;
676 for (i = 0; i < slots; i++)
677 __clear_bit_le(bit_pos + i, d.bitmap);
679 set_page_dirty(page);
680 f2fs_put_page(page, 1);
682 dir->i_ctime = dir->i_mtime = current_time(dir);
683 f2fs_mark_inode_dirty_sync(dir, false);
686 f2fs_drop_nlink(dir, inode);
689 bool f2fs_empty_inline_dir(struct inode *dir)
691 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
693 unsigned int bit_pos = 2;
695 struct f2fs_dentry_ptr d;
697 ipage = f2fs_get_node_page(sbi, dir->i_ino);
701 inline_dentry = inline_data_addr(dir, ipage);
702 make_dentry_ptr_inline(dir, &d, inline_dentry);
704 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
706 f2fs_put_page(ipage, 1);
714 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
715 struct fscrypt_str *fstr)
717 struct inode *inode = file_inode(file);
718 struct page *ipage = NULL;
719 struct f2fs_dentry_ptr d;
720 void *inline_dentry = NULL;
723 make_dentry_ptr_inline(inode, &d, inline_dentry);
725 if (ctx->pos == d.max)
728 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
730 return PTR_ERR(ipage);
733 * f2fs_readdir was protected by inode.i_rwsem, it is safe to access
734 * ipage without page's lock held.
738 inline_dentry = inline_data_addr(inode, ipage);
740 make_dentry_ptr_inline(inode, &d, inline_dentry);
742 err = f2fs_fill_dentries(ctx, &d, 0, fstr);
746 f2fs_put_page(ipage, 0);
747 return err < 0 ? err : 0;
750 int f2fs_inline_data_fiemap(struct inode *inode,
751 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
753 __u64 byteaddr, ilen;
754 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
760 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
762 return PTR_ERR(ipage);
764 if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
765 !f2fs_has_inline_data(inode)) {
770 if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) {
775 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
778 if (start + len < ilen)
782 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni);
786 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
787 byteaddr += (char *)inline_data_addr(inode, ipage) -
788 (char *)F2FS_INODE(ipage);
789 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
790 trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err);
792 f2fs_put_page(ipage, 1);